Bi2Ru2O7 pyrochlore electrodes for Bi 2O3 based electrolyte for IT-SOFC applications

Vincenzo Esposito, Bac H. Luong*, Elisabetta Di Bartolomeo, Eric D. Wachsman, Enrico Traversa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Bismuth ruthenate pyrochlore (Bi2Ru2O7: BRO) was tested as a cathode in several bismuth oxide-based electrolyte cells. Erbium oxide stabilized bismuth oxide (ESB) (Bi2O3) 0.8 (Er2O3)0.2, Bi2V 0.9Me0.1O5.35 (BIMEVOX10, Me = Co, Cu, Zn), and Bi2Ru2O7 (BRO) were synthesized via solid state reaction. ESB and BIMEVOX powders were pressed and sintered into dense pellets while BRO was deposited and sintered as porous electrodes onto ESB and BIMEVOX dense pellet surfaces. Morphologies and phases of the materials were characterized by Field Emission Scanning Electron Microscope and x-ray diffraction, respectively. Electrochemical performances of BRO/ESB and BRO/BIMEVOX symmetric cells were tested using Electrochemical Impedance Spectroscopy (EIS) at 200-700 °C in air. High polarization for BIMEVOX cells was observed, while ESB cells showed a promising behaviour. Different electrochemical performances of BRO electrodes, with ESB or BIMEVOX, indicated that the phases formed at electrodes/electrolyte interface controlled the cell polarization process. copyright The Electrochemical Society.

Original languageEnglish (US)
Title of host publicationSolid State Ionic Devices IV
Pages263-277
Number of pages15
Volume1
Edition7
DOIs
StatePublished - 2005
Externally publishedYes
Event4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society - Los Angeles, CA, United States
Duration: Oct 16 2005Oct 21 2005

Other

Other4th International Symposium on Solid-State Ionic Devices - 208th Meeting of the Electrochemical Society
CountryUnited States
CityLos Angeles, CA
Period10/16/0510/21/05

ASJC Scopus subject areas

  • Engineering(all)

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